2026 Kia EV9 Long Range RWD: home charging cost in Idaho

A 2026 Kia EV9 Long Range RWD draws 38 kWh per 100 miles per the EPA; at Idaho's 12.8¢/kWh residential rate that's $4.86 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home costs a fraction of what gas would here: 69.6% less than gas per mile, here specifically.

What a year of driving costs

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Kia EV9 Long Range RWD charged at home in Idaho costs about $730/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,673 a year.

Filling up the 2026 Kia EV9 Long Range RWD, in dollars

A 2026 Kia EV9 Long Range RWD needs roughly 115.9 kWh to reach its EPA-rated 305-mile range, which runs about $14.84 at 12.8¢/kWh in Idaho.

Where this ranks

This combination ranks 3,896 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Kia EV9 Long Range RWD alone ranks 218 of 400 models for efficiency; Idaho alone ranks 3 of 51 states for electricity price.

Next step: home charger installation

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

Line up a few Idaho electrician quotes for Level 2 install before you commit either way.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Idaho is one of the cheapest states for home electricity — the guide to why the cost varies so much by state covers what drives that.